Originally Posted by Generator John

Hi,
I am the proud owner of an AVL 823. I don't have the RIV sensor though, but found your message whilst researching it, Mercedes part number 617 589 10 21 00

The part you mention correctly has a loop for an inductive spark pickup and could be used with any such strobe or engine tester, but the RIV probe I mention plugs directly into the AVL 823, the same socket as a clamp impulse detector KG-6 etc. for injector lines

I am currently trying to find a wiring diagram for the RIV, or somebody willing to give me the pinouts and short locations (how it determines which device is plugged in) from the cable plug.

I have got full data and circuit descriptions and diagrams of the AVL 823 diesel tester, but there's very little on the RIV sensor, which can be used dynamically as you say. I'm sure this device could be interfaced with a timing light without the rest of the boxes with a little imagination, it's probably just an inductive pick-up.
If you could use the manuals (.pdf) just let me know.